# -*- coding: utf-8 -*-
"""
Created on Wed May 15 15:45:16 2024

@author: 48848
"""

x = input("请输入第一个数")
y = input("请输入第二个数")
z = input("请输入第三个数")
# 比较 x 和 y
while x > y:
    temp = y
    y = x
    x = temp

# 比较 y 和 z
while y > z:
    temp = z
    z = y
    y = temp

print(x, "<", y, "<", z)
    